Amazon has topped a table for UK customer satisfaction in a biannual survey

The UK's biggest supermarket recorded the sector's largest year-on-year increase of 1.2 points in the latest UK Customer Satisfaction Index (UKCSI), with the quality and helpfulness of staff largely behind the rise.

It mirrors the supermarket reporting a 0.7 per cent increase in UK like-for-like sales over the six weeks to January 7 and a 1.8 per cent rise in third quarter sales.

Amazon had the highest levels of customer satisfaction for the third survey running. The consumer giant is even teaming up with Ford to bring their Alexa, personal assisstant into cars.

New entrant Asos took second place, followed by John Lewis, Marks & Spencer's food stores and Waitrose.

Nationwide, first direct, Greggs, giffgaff and Iceland completed the top 10.

Jo Causon, the chief executive of the Institute of Customer Service, which runs the survey, said: "It has been widely acknowledged that customer trust in Tesco suffered during the 2014 accounting scandal which saw the company lose touch with loyal patrons.

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Tesco was voted most improved supermarket

"This loss in trust saw record losses of £6.4 billion during 2014/15 but a renewed focus on service excellence has finally got customers back on side – this can be seen in the 2017 UKCSI, and, as shown by the company's recently announced full-year results, has paid dividends."

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Waitrose came fifth in the survey

"With the smallest gap in customer satisfaction between the highest and lowest performing businesses out of any sector, a sustained focus on customer satisfaction will be key for business success in 2017.

"There is everything to play for and UK supermarkets cannot take their eye of the ball."